Pardon me, but this is a load of hooey.

I have customers with 5 or 6 NICs in their NT machines routing across
different subnets, and it works like a champ.  Anyone who claims you can
only have 2 network cards in an NT machine just doesn't know what they're
talking about, and anyone who would suggest having two network cards in the
same machine on the same subnet just doesn't understand TCP/IP, as there
would be very little, if any, benefit to such an arrangement, and could
cause lots of problems.

As for the comment about broadcasts, I don't know what this is about.
Broadcasts shouldn't be forwarded by a second network card.  Granted, I
haven't tested this under NT, but if two cards are on different subnets, the
broadcast shouldn't be forwarded, and if the two cards are on the SAME
subnet, there's no reason to forward the broadcast since the other NIC is on
the same subnet and should be receiving the broadcast, not sending it.

Forwarding packets across two NICs on the same subnet just doesn't make
sense.  Use a hub or a repeater if this is what you need.

-Matt

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Scott Dattalo
> Sent: Thursday, February 08, 2001 6:02 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: Fw: [OT]: PIC web server question
>
>
> On Thu, 8 Feb 2001, Neil McMurtrie wrote:
>
> > Octavio,
> >
> >  You do not say which operating system you are using, Win NT
> and Win2K both
> >  allow TCP/IP routing using 2 network cards. If you are using
> Win95/98 then
> >  you will need to go down the router option either using Linux or a
> > dedicated
> >  router.
>
> nt and 2k only support 2 cards if they're on the same subnet - or
> I should say
> they work most of the time... But there are bugs in the windows
> stacks (as if
> that weren't news). The most blatant one has to do with broadcasts.
> Specifically, a broadcast sent over one card has the return IP of
> the other
> card.
>  Now Linux OTOH,  works just fine (that shouldn't be news either) with two
> network cards in my experience.
>
> --
> http://www.piclist.com hint: The PICList is archived three different
> ways.  See http://www.piclist.com/#archives for details.
>
>

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